[REFRESHING] Error with dataset refreshing

Hello everyone,

I recently made a change in my request set in some dashboard I had. I created a duplicate of one request to make some calculus to it. Once this was done on my desktop, I uploaded it to my app.powerBI, here is the problem, It seems that the dataset cannot be refreshed through my gateway, even if it's rereshing in my desktop. I got the following JSON Error text:

{"error":{"code":"DM_GWPipeline_Gateway_MashupDataAccessError","pbi.error":{"code":"DM_GWPipeline_Gateway_MashupDataAccessError","parameters":{},"details":[{"code":"DM_ErrorDetailNameCode_UnderlyingErrorCode","detail":{"type":1,"value":"-2147467259"}},{"code":"DM_ErrorDetailNameCode_UnderlyingErrorMessage","detail":{"type":1,"value":"MySQL : Fatal error encountered during data read."}},{"code":"DM_ErrorDetailNameCode_UnderlyingHResult","detail":{"type":1,"value":"-2147467259"}},{"code":"Microsoft.Data.Mashup.ValueError.DataSourceKind","detail":{"type":1,"value":"MySql"}},{"code":"Microsoft.Data.Mashup.ValueError.DataSourcePath","detail":{"type":1,"value":"mysql04.zs.daevel.fr:3306;mykadee"}},{"code":"Microsoft.Data.Mashup.ValueError.ErrorCode","detail":{"type":1,"value":"-2147467259"}},{"code":"Microsoft.Data.Mashup.ValueError.Message","detail":{"type":1,"value":"Fatal error encountered during data read."}},{"code":"Microsoft.Data.Mashup.ValueError.Reason","detail":{"type":1,"value":"DataSource.Error"}}],"exceptionCulprit":1}}}

The error message precise that the concerned table is the original table I made the duplicate from.

I think the amount of requests I make to the database through my gateway might be too big. 

Maybe someone has a clue of what's realy happening ?

Thanks for your attention.